Turnover is the speed at which your product transforms from “boxes in the warehouse” to cash in your account. On Mercado Libre, it affects everything: availability and risk of OOS, storage costs, frozen capital, participation in promotions, and even how aggressively you can run ads.
In this article, we will cover:
- what turnover is and how it differs from “just sales”;
- how to calculate turnover (in days and in turns);
- what turnover norms are considered good;
- how to improve turnover without killing margins and without chaos.
What is Turnover in Simple Terms
Turnover is an indicator of how many days your current stock lasts at the current sales pace.
It is often calculated in “days of stock”:
Turnover in days (Days of Inventory / Days on Hand) = Stock / Daily Sales
The fewer days, the faster the product turns over.
Why Turnover is Important on Mercado Libre
- Less money is tied up in inventory → more opportunities to purchase and grow
- Lower storage costs and risks (especially for slow SKUs)
- Reduced risk of OOS (if you plan deliveries correctly)
- More predictable advertising: you can scale without fearing “burning the budget on OOS”
- Fewer sales and markdowns: slow-moving products usually need to be “cleared with discounts”
How to Calculate Turnover: 3 Practical Methods
Method 1. Turnover in Days (the most practical)
Days of Stock = Stock / Daily Sales
Where:
- Stock — available stock per SKU (preferably by key warehouse)
- Daily Sales — average over 7 or 14 days
Example Stock: 200 units Sales over 14 days: 140 units → 10 units/day Days of Stock = 200 / 10 = 20 days
Method 2. Inventory Turnover (how many times the stock has “turned over”)
Classic formula from finance:
Inventory Turnover = Cost of Goods Sold (COGS) / Average Inventory
In e-commerce/marketplaces, it is often simplified by units: Turnover (for the period) = Sales for the period / Average stock for the period
This is convenient if you are calculating monthly and want to compare seasonality.
Method 3. Sell-through (percentage of batch sold)
Useful when you have received a batch and want to understand the sales speed:
Sell-through = Sales / (Sales + Stock) × 100%
This is an additional metric, not a replacement for days of stock.
What to Consider in “Stock”: Important Nuance Regarding Warehouses
On marketplaces, “total stock” can be misleading. More important is:
- stock at the key warehouse that provides normal delivery,
- stock by variations (size/color), if they are critical.
Because a product may be “in stock,” but delivery has become long → conversion drops → this is effectively a hidden OOS.
→ Warehouse Guide: Stock, OOS, and Turnover
What Turnover Norms are Considered Good
There is no single number because norms depend on:
- category,
- margin,
- lead times,
- seasonality,
- storage costs,
- strategy (growth/profit/assortment).
But practical ranges in days of stock can be provided.
Practical Guidelines (Days of Stock)
-
3–7 days — very fast turnover Plus: minimal frozen money. Minus: high risk of OOS, requires a perfect supply chain.
-
8–21 days — “healthy zone” for many SKUs Fast enough, while you can manage deliveries and not face OOS every week.
-
22–45 days — slow but still manageable Often acceptable for seasonal products or products with long lead times, but you need to monitor storage and capital.
-
46–90 days — poor turnover Money is tied up, high risk of excess stock, markdowns, and sales.
-
90+ days — excess stock Usually requires a plan: improve the listing/bundle/sale/remove SKU.
Important Note
For Hero SKUs (flagships), it is often acceptable to hold more days of stock because:
- OOS for them is too costly (loss of positions and organic reach),
- their sales finance the business.
Turnover and Profit: Why “Speeding Up” is Not Always Beneficial
You can speed up turnover with discounts and advertising. But this can:
- kill margins,
- raise DRR,
- increase returns (in some categories),
- spike demand so much that you go into OOS.
Therefore, turnover should be improved in a way that does not destroy profit.
→ Profit Guide: Profit and Margin → About advertising and DRR: DRR and Advertising
How to Improve Turnover: 9 Levers (by Strength)
-
Improve Listing Conversion
- first screen, photos, benefits
- reviews/rating
- delivery and availability by warehouses The healthiest way: sales grow without dumping.
-
Fix Delivery/Warehouse Issues If delivery is poor, the product will be “slow” even at a good price.
-
Reassess Pricing (cautiously) Price is a powerful lever but can worsen profit. → more details: How Price Changes Affect Profit
-
Remove “junk” SKUs and focus on strong ones Assortment chaos often reduces capital turnover.
-
Bundles If the category allows, bundles accelerate sales and can maintain margins better than discounts.
-
Targeted Advertising for Specific Queries To avoid spiking DRR, use advertising “like a scalpel,” not like a flamethrower.
-
Redistribute Stock Between Warehouses Sometimes this gives an instant sales boost because it improves delivery.
-
Planned Clearance of Excess Stock If a product has been sitting for 90+ days, it is often more profitable to free up capital than to “hold onto hope.”
-
Remove SKU If a product is structurally slow and low-margin — it’s better to replace it. → about finding problematic SKUs: How to Identify Unprofitable SKUs
Common Mistakes When Working with Turnover
- calculating turnover based on “total stock,” ignoring key warehouses
- pushing discounts for the sake of turnover and losing profit
- ramping up advertising without controlling DRR and without stock on hand
- ignoring variations (sizes/colors), which leads to hidden OOS
- applying the same norms for all SKUs (Hero and tail are different)
Checklist: How to Monitor Turnover Every Week
- Days of Stock for top SKUs (7 and 14 days)
- List of “red” items: ≤ 7 days (risk of OOS)
- List of “slow” items: ≥ 45 days (candidates for acceleration plan)
- Frozen capital: stock × cost price
- Action plan for the week: 1–2 SKUs for acceleration + 1–2 SKUs for OOS protection